Pressurized fluid directional flow control valve assembly

A valve assembly for selectively controlling pressurized fluid flow to operate a fluid operated working cylinder and piston comprising:

• a valve body;
• two groups of three bores each in the valve body;
• biased plunger valves operably interposed in each of the bores;
• a pair of separated flow passages on one side of said interposed valves, one of said passages being in continuously open flow communication commonly inter-connecting in parallel between the three bores of one bore group and the other of said passages being in continuously open flow communication commonly inter-connecting in parallel between the three bores of the other bore group;
• a first fluid connection inter-connected with the first one of the bores in each group for providing pressurized fluid to the first bore on the other side of the interposed valves;
• a second fluid connection between the second bore in one of the bore groups and one side of a cylinder to be operated;
• a third fluid connection between the second bore in the other bore group and a second side of the cylinder to be operated;
• a fourth fluid connection in each bore group inter-connected with the third one of the bores for exhausting fluid from the third bores on the other side of the interposed valves;
• and
• control means for selectably actuating the interposed valves in a predetermined sequence for inter-connection between the passage and selected of said fluid connections.

A valve assembly for selectively providing pressurized fluid to a first side of a two sided fluid operated piston within a cylinder and exhausting fluid from a second side of the piston, providing pressurized fluid to said second side of the piston and exhausting it from said first side and providing any one of four operational neutral conditions pre-selected from a closed condition, an open condition, a float condition, and a tandem condition;

• said valve assembly comprising:
• a) a body having first and second ends and a central axis extending therebetween;
• b) even groups of three bores each defined by said body substantially parallel to said central axis, each bore being substantially equidistance radially outward from said central axis and substantially equidistance from each other bore radially about said central axis;
• c) passage means in said body inter-connecting each group of three bores;
• d) pressure source connection means in said body for connecting a first one of each group of three bores to a source of fluid pressure;
• e) cylinder connection means in said body for connecting a second one of said each group of three bores to a corresponding side of said piston in said cylinder;
• f) exhaust connection means in said body for connecting each group of three bores to an exhaust fluid reservoir;
• g) a valve interposed in each of said bores biased in a closed position and openable against said bias to inter-connect said connection means with said passage means;
• h) valve actuation means rotationally positionable in radial increments corresponding to the distance between each bore about said central axis and linearly moveable along said central axis having solid surfaces for contacting said valves to overcome said closed bias and to inter-connect said pressure cylinder or exhaust connections with said passage when said actuation means is moved linearly and interposed voids in said solid surface for not contacting said valves when said actuation means is moved linearly;
• and
• i) means for selecting a neutral rotational position and neutral linear movement to select an operational neutral condition from among a closed, an open, a float or a tandem condition.

A valve assembly for selectively controlling pressurized fluid flow to operate at least one fluid operative working cylinder and piston comprising:

• a) a valve body;
• b) at least one pair of bore groups with each group defining at least three bores in said body;
• c) a biased plunger valve operably interposed in each of said bores;
• d) a pair of separated flow passages defined on one side of said interposed valves, one of said passages commonly inter-connecting the three bores of one bore group and the other of said passages commonly inter-connecting between the three bores of the other bore group;
• each of said passages being in continuous open flow communication and providing a parallel flow relation with respect to the bores to which they are inter-connected respectively;
• e) a first of said bores of each group being adapted to receive pressurized fluid to be supplied to a working cylinder and piston;
• f) a second of the bores of each group being adapted to exhaust pressurized fluid returned from the working cylinder and piston;
• g) a third of the bores of each group being adapted to conduct pressurized fluid between the working cylinder and piston and a selected of said first and second bores;
• and
• h) control means operable for selectively actuating said valves in a predetermined sequence for effecting selected flow interconnection between said first, second and third bores and the flow passage thereat.